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  2. Basement waterproofing - Wikipedia

    en.wikipedia.org/wiki/Basement_waterproofing

    Weeping tile is a porous plastic drain pipe installed around the perimeter of the house. The main purpose of external weeping tile is preventing water from getting into a basement. However, these pipes can become clogged or damaged, which causes excess water to put pressure on internal walls and basement floors.

  3. Water damage - Wikipedia

    en.wikipedia.org/wiki/Water_damage

    Examples are broken water supply lines, tub or sink overflows or appliance malfunctions that involves water supply lines. Category 2 Water - Refers to a source of water that contains a significant degree of chemical, biological or physical contaminants and causes discomfort or sickness when consumed or even exposed to. Known as "grey water".

  4. Interstitial condensation - Wikipedia

    en.wikipedia.org/wiki/Interstitial_condensation

    The sources of interior moisture are people, appliances such as dishwashers, cooking, showers, wet basements, leaking pipes and roof/wall rainwater leaks. Leaks of liquid water into the building envelope are a different problem than interstitial moisture condensation, but this additional water can exacerbate interstitial wetting which can ...

  5. Building airtightness - Wikipedia

    en.wikipedia.org/wiki/Building_airtightness

    The relationship between pressure and leakage air flow rate is defined by the power law between the airflow rate and the pressure difference across the building envelope as follows: [16] q L =C L ∆p n. where: q L is the volumetric leakage airflow rate expressed in m 3 h −1; C L is the air leakage coefficient expressed in m 3 h −1 Pa −n

  6. Basement - Wikipedia

    en.wikipedia.org/wiki/Basement

    Downspouts from roof gutters should drain freely into the storm sewer or directed away from the house. Downspouts should not be connected to the foundation draintiles. If the draintiles become clogged by leaves or debris from the rain gutters, the roof water would cause basement flooding through the draintile.

  7. Leader head - Wikipedia

    en.wikipedia.org/wiki/Leader_Head

    Copper Leader Head at Penn's Quadrangle, Philadelphia 1894 Copper Leader at Shofuso Japanese House and Garden in Philadelphia. The purpose of a leader head is to help transfer excess water from the roof onto downspouts, thus preventing the gutters from overflowing and water washing over the walls, which is a common occurrence in areas susceptible to heavy rain cycles.

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